Method and system for self-routing in synchronous digital cross-connection

Abstract

The present invention discloses a method for self-routing in synchronous digital cross-connection, comprising: self-routing transmitting means insert a CM data into a STM-N data stream according to a frame header indicator and a self-routing start address signal; self-routing receiving means extract the CM data from the STM-N data stream according to the frame header indicator and the self-routing start address signal, and write the CM data into a cross-connection control memory. The present invention also discloses a system for self-routing in synchronous digital cross-connection, comprising: self-routing transmitting means and self-routing receiving means, wherein, the self-routing transmitting means comprise a self-routing transmitting control unit, a first CRC checking unit and an inserting data generating unit, the self-routing receiving means comprise a self-routing extracting control unit, a second CRC checking unit and a cross-connection control memory. The present invention provides users with a self-routing scheme for synchronous digital cross-connection, which can be realized with ease, occupies less resource, has better reliability and is suitable for large capacity cross configuration.

Description

FIELD OF THE INVENTION[0001]The present invention relates to digital communication field, in particular to a method and a system for self-routing in synchronous digital cross-connection.BACKGROUND OF THE INVENTION[0002]A cross-connection device is an important part of an optical Synchronous Digital Hierarchy (SDH) system. Synchronous digital cross-connection realizes the transparent connection and the reconnection among a plurality of Virtual Containers (VC) formed in accordance with the Standard G.709. The transparent connection and the reconnection are controllable between any ports. Besides the SDH rates defined by the Standard 6707 and the Plesiochronous Digital Hierarchy (PDH) rates defined by the Standard G.702, these ports can also support control and management function defined by the SDH management standard G.784.[0003]The grooming of the inter-layer traffic and the combination of the intra-layer traffic are one important aspect of the management of the cross-connection dev...

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Benefits of technology

[0006]In view of the problem mentioned above, the present invention provides a method and a system for self-routing in synchronous digital cross-connection. The method and the system provide users with a self-routing scheme for synchronous digital cross-connection, which can be realized with ease, occupies less system resources, has high reliability and is suitable for large capacity cross configuration.

[0043]The method and the system for self-routing in synchronous digital cross-connection provided in the present invention process the cross configuration of each VC through an upstream service board of the STM-N data stream and transmit it to a cross chip, and the cross chip performs self-routing configuration in accordance with the received cross configuration information of each VC, so that the problem in the art that a processor interface can hardly satisfy the demand on large capacity cross-connection configuration can be overcome, and beneficial effect can be achieved to provide users with a self-routing scheme for synchronous digital cross-connection, which can be realized with ease, occupies less system resources, has high reliability and is suitable for large capacity cross configuration.

Problems solved by technology

However, this method requires to occupy the system resources of the processor, and under an application environment where the cross capacity is very large and the cross matrix of the chip needs to be updated quickly, the self-routing configuration method using a processor can not satisfy the demand in practice.

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